Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823342 | Time division exchange system having functions of compressing and expanding information | Takashi Morita, Akira Kusaba | 1989-04-18 |
| 4816544 | Polyamideimide elastomer and production thereof | Yukiatsu Komiya, Masao Ishida, Takuji Okaya | 1989-03-28 |